Openings to use against the London System

In an OTB tournament I have this upcoming Thursday, one of the opponents that I will play against uses the London System, so I wanted to know of some good openings/strategies to use against them.

UPDATE: So apparently today was just the first part of the tournament (there will be more on this upcoming Monday and possibly Thursday as well. Good news is, I am moving on with a score of 2.5 points (I played 3 games), my first game being a draw, and my other two games being wins. That being said, I only drew my first game because my opponent had already played against me and studied strategies in order to try and win.

At our level, choosing and playing specific openings matters least - what's the point of learning 15 moves of ''insert opening X'' theory, if we are going to blunder pieces left and right in the middle/endgame? Specific opening lines rarely (if ever) determine our results, you could play a3 on the first move and that won't guarantee you (or your opponent) absolutely anything

fair enough i suppose

Hi Adrian!

Firstly, I wish you best of luck. That sounds exciting.

I agree with Borat completely.

I think the way I play against it is dubious, so I don't want to mislead you. I start with d5. Basically, I try to trade off the dark bishop that white brings out on move 3 by playing e6 to liberate my dark bishop. I put my bishop on d5 and let the opponent take it. I recapture with the queen. If he doesn't take it, the opponent will usually retreat it to g3. If he does this, I capture it there with my bishop. But be aware, that this frees the rook because they capture back with the h pawn and then the rook and the light-square bishop will try to double team your h7 pawn. It can be defended, but you have to ready for it.    

Respond with e5 and completely shut down the London System and no theory.

The best tactician will win at the 1000 level anyways. I play the Englund Gambit up to 1300 rated players or short time controls.

Theres also the main line which is dubious; I can post if you like? I can also find a master game played at the GM level as well.

Anything but the Englund Gambit, don't play losing stuff in tournament games

Thank you everyone for the advice, I think it will be very helpful tomorrow

1..e5 can break White out but if White plays d5 your Knight on b1 will not be able to go to its natural square on c6. Agadmator's anti-London system (1. d4 Nf6 2. Bf4 c5) might work but personally if White plays 1. d4 d6 Black can equalize easily if White plays 'robotically' or on autopilot. Example? 1.d4 d6 2.Bf4 Nd7 3.Nf3 g6. Here White should play 4.e4 but it's not in the 'spirit' of the London system... 4.e3 Bg7 5.h3 e5 6.Bh2 and I believe that Black has equalized leaving White with a negligible advantage.

The best move to throw off London is 1. d4 c5. The Old Benoni.

Definitely or play the move c6 and if c4 then a6 and if e4 then e6 and try to delay d7-d5 pawn push like forever that way even if they try they cannot transpose to a London that's what I'll recommend !

Just ; if you're gonna delay d7-d5 forever make sure to play the moves a6 and h6 that way the opponents bishops can't get too active and that way if Bf4 at any point you can play g5 and kick the bishop away!